BlackBerry shares began correcting themselves following the announcement. They were down about 15% in after-hours trading.

Here's the statement from BlackBerry:

BlackBerry Limited is aware of certain press reports published today with respect to a possible offer by Samsung to purchase BlackBerry. BlackBerry has not engaged in discussions with Samsung with respect to any possible offer to purchase BlackBerry. BlackBerry's policy is not to comment on rumors or speculation, and accordingly it does not intend to comment further.

The statement from BlackBerry leaves very little wiggle room. It sounds like the Reuters report was completely wrong.

The Reuters report said Samsung wanted to buy BlackBerry for its patent portfolio. But the price seemed suspect. BlackBerry's patents were last valued at $2 to $3 billion. The alleged $7.5 billion figure would've been quite the premium.